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Dermoscopic Criteria (dermoscopic + criterion)
Selected AbstractsDermoscopic Features of Mucinous Carcinoma of the SkinDERMATOLOGIC SURGERY, Issue 8 2004Rie Yoshida Background. Dermoscopic features of nonpigmented skin lesions are seldom reported; dermoscopy might be useful in speculating pathologic features in the upper dermis. Objective. The objective was to identify additional dermoscopic criteria. Methods. Dermoscopy of the mucinous carcinoma of the skin occurring on the cheek of a 69-year-old man was performed. Results. We have shown characteristic dermoscopic features of whitish network and light-brown globules and they correspond to the pathologic findings of fibrous septum and mucinous deposition, respectively. Discussion. Dermoscopic examination seemed useful as an adjunct to the diagnosis of this rare nonpigmented malignant neoplasm. [source] Dermoscopic patterns of superficial basal cell carcinomaINTERNATIONAL JOURNAL OF DERMATOLOGY, Issue 10 2008Massimiliano Scalvenzi MD Background, Superficial basal cell carcinoma (BCC) presents as a scaly, pink to red,brown patch and is predominantly located on the trunk. Clinical diagnosis may not be always easy and implicates a variety of differential diagnoses; in this situation dermoscopy has been reported improving the diagnostic accuracy. This study investigated dermoscopic patterns of superficial BCC focalizing the most specific and frequent structures in order to improve the diagnostic accuracy. Limitations, Study population referred to skin lesion clinic. Methods, Dermoscopic patterns of 42 superficial BCCs were analyzed and photographed. These cases represented the 8% of all BCCs excised in our Department between 2005 and 2006. Results, Dermoscopic structures observed in the 42 superficial BCCs consisted of shiny white to red areas (100%), "erosions" (78.6%), short fine telangiectasias (SFTs) (66.6%), leaf-like areas (16.6%), arborizing telangiectasias (14.3%), blue,gray globules (14.3%) and large blue,gray ovoid nests (4.7%). Conclusions, Our study identifies the presence of shiny white to red areas, SFTs and "erosions" as main dermoscopic criteria of superficial BCC. Other dermoscopic features, such as leaf-like areas, arborizing telangiectasias, blue,gray globules and large blue,gray ovoid nests, are not strongly associated with the diagnosis of superficial BCC but they are useful in the differential diagnosis from other pigmented and nonpigmented skin lesions. [source] Dermoscopic observation of Bowen's diseaseJOURNAL OF THE EUROPEAN ACADEMY OF DERMATOLOGY & VENEREOLOGY, Issue 5 2004L Bugatti ABSTRACT Background, In the literature no specific dermoscopic criteria have been described for the diagnosis of Bowen's disease (BD). Objective/aim, To assess the morphological findings of BD seen under dermoscopic observation. Methods, Clinical and dermoscopic images of 14 patients affected by BD with various amount of pigmentation were obtained by means of Heine Dermaphot. Dermoscopic images were analysed by experienced observers applying the modified pattern analysis. Results, The most frequently occurring dermoscopic features were found to be: multicomponent pattern (100%); atypical vascular structures (86.6%); absence of pigmented network (64.3%) or presence of pseudo-network (35.7%); irregular diffuse pigmentation or blotches of pigment (64.2%); irregularly distributed dots and globules (64.2%); focal/multifocal hypopigmentation (78.5%), scaly surface (64.2%) and haemorrages (26.6%). Conclusions, Dermoscopically, BD is mainly characterized by a multicomponent global pattern associated with a prominent vascular pattern (mainly dotted vessels) and a scaly surface. Although no specific dermoscopic criteria can be given for BD, epiluminescence can be a valuable aid in the diagnosis of such a mimicker lesion. [source] Dermoscopic pattern of intermediate stage in seborrhoeic keratosis regressing to lichenoid keratosis: report of 24 casesBRITISH JOURNAL OF DERMATOLOGY, Issue 2 2007P. Zaballos Summary Background, Lichenoid keratosis (LK) is a well-described entity which has been proposed to represent an immunological or regressive response to pre-existing epidermal lesions such as solar lentigines or seborrhoeic keratoses. Objectives, To evaluate the dermoscopic criteria of a series of cases of LK with remaining areas of seborrhoeic keratosis which were both dermoscopically and histologically diagnosed. Methods, Pigmented lesions with dermoscopic areas of seborrhoeic keratosis and LK in the same tumour were consecutively diagnosed and prospectively included in the study. All pigmented lesions were examined and registered using DermLite Foto equipment (3Gen, LLC, Dana Point, CA, U.S.A.), at 10-fold magnification, at the Dermatology Department of Hospital de Sant Pau i Santa Tecla (Tarragona, Spain), between 1 January 2003 and 31 December 2005. Results, In total, 24 cases of lesions with dermoscopic areas of seborrhoeic keratosis and LK were collected. In four lesions (17%), the clinical differential diagnosis without dermoscopy included malignant melanoma and in seven lesions (29%), basal cell carcinoma. The diagnosis of LK was clinically considered without dermoscopy in only six cases (25%). A granular pattern was observed to be distributed throughout the LK areas of the lesions. This pattern consisted of the presence of brownish-grey, bluish-grey or whitish-grey coarse granules that formed, in 11 cases (46%), globules and/or short lines. In one lesion, located on the face, these short lines produced annular or rhomboid structures as seen in lentigo maligna melanoma. Conclusions, Dermoscopy is a useful tool which assists in the correct clinical recognition of LK, which may also potentially illuminate the pathogenesis of these tumours, showing the intermediate stage of regressing epidermal lesions in an LK. [source] Instrument-, age- and site-dependent variations of dermoscopic patterns of congenital melanocytic naevi: a multicentre studyBRITISH JOURNAL OF DERMATOLOGY, Issue 1 2006S. Seidenari Summary Background, Recently, we identified and described dermoscopic aspects, present with a higher frequency in congenital melanocytic lesions with respect to acquired naevi. We also classified small- and medium-sized congenital naevi (CN) into nine subtypes according to their macroscopic and dermoscopic aspects. Objectives, Because the recognition of dermoscopic features may be instrument dependent, in this study, we wanted to check whether dermoscopic patterns specific for CN can be identified in digital images acquired by means of different instruments. We also wanted to check the validity of our previously proposed classification and assess possible age- and site-dependent variations of dermoscopic patterns and naevus subtypes. Patients/methods, Images corresponding to 384 small- or medium-sized CN were collected in eight different centres employing four different instruments. Lesion images were evaluated and checked for the presence of specific dermoscopic criteria, classified, and compared with a database of 350 acquired naevi. Results, Specific and unspecific dermoscopic features were identifiable in images acquired by means of all four instrument types. The mean number of identified features per lesion did not vary according to the instrument employed for the acquisition of the images; however, it was lower for lesions recorded employing low magnifications. The previously proposed classification was easily applied to the whole image database. The variegated naevus type was identified as a highly specific clinical/dermoscopic pattern. Dermoscopic features varied according to age and location. The globular type prevailed in subjects under 11 years of age and on the trunk, whereas the majority of reticular lesions were located on the limbs. Conclusions, Because definite clinical and histological criteria for the diagnosis of the congenital nature of naevi are lacking, the use of dermoscopy can be of great help in identifying those lesions where the presence of specific dermoscopic features makes the diagnosis of CN more likely. Moreover, dermoscopy can be useful both for the classification of lesions already identified as congenital according to definite clinical and anamnestic data and for a possible correlation of naevus phenotype and dermoscopic patterns to the risk of developing a malignant melanoma in prospective studies. [source] Dermoscopic findings of haemosiderotic and aneurysmal dermatofibroma: report of six patientsBRITISH JOURNAL OF DERMATOLOGY, Issue 2 2006P. Zaballos Summary Background, The clinical diagnosis of dermatofibroma is commonly easy. However, the differentiation of dermatofibroma from other cutaneous tumours is difficult in some instances, primarily in atypical cases and rare variants. Haemosiderotic dermatofibroma is a variant composed of numerous small vessels, extravasated erythrocytes and intra- and extracellular haemosiderin deposits. Aneurysmal dermatofibroma is a variant composed of large, blood-filled spaces without endothelial lining. Some authors consider that haemosiderotic dermatofibroma is an early stage in the development of aneurysmal dermatofibroma. The clinical differential diagnosis of haemosiderotic or aneurysmal dermatofibroma must include melanoma and other melanocytic tumours, vascular neoplasms, adnexal tumours and nonspecific cysts. Dermoscopy improves the diagnostic accuracy in pigmented and nonpigmented skin lesions. Objectives, To evaluate specific dermoscopic criteria. Methods, Dermoscopic examination (using the DermLite Foto; 3Gen, LLC, Dana Point, CA, U.S.A.) of six patients with haemosiderotic or aneurysmal dermatofibromas was performed to evaluate specific dermoscopic criteria. Results, A multicomponent pattern with a central bluish or reddish homogeneous area in combination with white structures and a peripheral delicate pigment network along with vascular structures was noted in five of six lesions. Conclusions, This dermoscopic pattern yielded the diagnosis of haemosiderotic or aneurysmal dermatofibroma in most cases. However, this multicomponent pattern may present in some melanomas and although it is useful in determining a clinical diagnosis of aneurysmal dermatofibroma, it may not be specific to this entity. [source] | ||||||||||